Synchronous lifting mechanism and table

ABSTRACT

A synchronous lifting mechanism has a first lifting driver, a second lifting driver, a first inner fixed tube and a second inner fixed tube, and the synchronous lifting mechanism has a synchronizing mechanism which enables the first lifting driver and the second lifting driver to lift synchronously.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No.201810707228.2 with a filing date of Jul. 2, 2018. The content of theaforementioned applications, including any intervening amendmentsthereto, are incorporated herein by reference.

TECHNICAL FIELD

The present invention relates to a synchronous lifting mechanism and atable.

BACKGROUND ART

A table as an article for daily use is common in life, work and schoollearning, a common table is generally formed by fixedly connecting atabletop with table legs, the lengths of the table legs are fixed, andthus, the height of the whole tabletop is fixed and cannot be adjusted.Along with difference of application environments and due to applicationdemands of different people, requirements for height diversification,the degree of automation and the degree of comfort of the table arehigher and higher.

Air springs have been used as the table legs of the table to support thetabletop at present, a control assembly for controlling each air springto start or close is mounted on the lower surface of the tabletop, eachcontrol assembly is connected with a drag line connector (hinged to aconnecting assembly) on the connecting assembly through components suchas a drag line, the other end of each drag line connector is abuttedagainst the switch of the corresponding air spring, when the tablerequires to ascend or descend, a user controls the control assemblies toapply power to the drag lines so as to enable the drag line connectorsto rotate, thus, the switches of the air springs are turned on, and theair springs ascend or descend according to the intention of the user.

Because all the table legs at the two ends of the table are supported bythe air springs, the air springs require to run synchronously when thetable is controlled to lift, otherwise the tabletop will be inclined ifone side ascends or descends but the other side does not move, forexample, when the tabletop requires to descend, a control person applieslarge downward pressure to one end of the table and applies smalldownward pressure to the other end of the table, and in thecircumstance, the tabletop is inclined most easily.

SUMMARY OF THE INVENTION

The present invention aims to provide a synchronous lifting mechanismand a table, and it can be ensured that a component supported on thesynchronous lifting mechanism cannot be inclined.

The technical solution for solving the technical problem is as follows:

the synchronous lifting mechanism comprises a first lifting driver, asecond lifting driver, a first inner fixed tube and a second inner fixedtube, and further comprises a synchronizing mechanism which enables thefirst lifting driver and the second lifting driver to liftsynchronously, and the synchronizing mechanism comprises:

a first support connected with a lifting end of the first liftingdriver, wherein the first support lifts along with lifting of the firstlifting driver;

a second support connected with a lifting end of the second liftingdriver, wherein the second support lifts along with lifting of thesecond lifting driver;

a first flexible traction component, wherein one end of the firstflexible traction component is fixedly connected with the second innerfixed tube, and after the first flexible traction component is flexiblymatched with one end of the second support, one end of the first supportand the other end of the first support, the other end of the firstflexible traction component is fixedly connected with the first innerfixed tube; and

a second flexible traction component, wherein one end of the secondflexible traction component is fixedly connected with the first innerfixed tube, and after the second flexible traction component is flexiblymatched with one end of the first support, one end of the second supportand the other end of the second support, the other end of the secondflexible traction component is fixedly connected with the second innerfixed tube.

A table comprises a tabletop, and further comprises the synchronouslifting mechanism, and the tabletop is connected with the synchronizingmechanism in the synchronous lifting mechanism.

The present invention has the advantages that when the first liftingdriver and the second lifting driver carry out lifting motion, thesynchronizing mechanism applies a restraining force to the first liftingdriver and the second lifting driver simultaneously, therefore, thecircumstance that the first lifting driver lifts too fast relative tolifting of the second lifting driver is avoided, the first liftingdriver and the second lifting driver lift synchronously, and it can beensured that components (such as the tabletop) supported on thesynchronous lifting mechanism cannot be inclined.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structure diagram of a table of the present invention;

FIG. 2 is a schematic diagram after a tabletop is concealed on the basisof FIG. 1;

FIG. 3 is a schematic diagram after a cross beam, a first movable outertube and a second movable outer tube are concealed on the basis of FIG.2;

FIG. 4 is a schematic diagram after a first inner tube and a secondinner tube are concealed on the basis of FIG. 3;

FIG. 5 is an assembly diagram of a first support as well as a firstrotating component, a second rotating component and a third rotatingcomponent;

FIG. 6 is an assembly diagram of a second support as well as a fourthrotating component, a fifth rotating component and a sixth rotatingcomponent;

FIG. 7 is a schematic diagram of a first connector;

FIG. 8 is a schematic diagram of a second connector;

Reference numerals in FIG. 1 to FIG. 8 are shown below:

-   -   10 represents a tabletop;    -   20 represents a first supporting component, and 21 represents a        second supporting component;    -   30 represents a first lifting driver, 301 represents a first        shaft, 31 represents a second lifting driver, and 311 represents        a second shaft;    -   40 represents a first support, 401 represents a first hole, 411        represents a first support body, 412 represents a first rotating        component, 413 represents a second rotating component, and 414        represents a third rotating component;    -   41 represents a second support, 410 represents a second hole,        421 represents a second support body, 422 represents a fourth        rotating component, 423 represents a fifth rotating component,        and 424 represents a sixth rotating component;    -   42 represents a first flexible traction component;    -   43 represents a second flexible traction component;    -   50 represents a first inner tube, 51 represents a first        connector, 510 represents a first U-shaped connecting portion,        and 511 represents a first bent connecting portion;    -   60 represents a second inner tube, 61 represents a second        connector, 610 represents a second U-shaped connecting portion,        and 611 represents a second bent connecting portion;    -   70 represents a cross beam, 71 represents a first movable outer        tube, and 72 represents a second movable outer tube; and    -   80 represents a first friction assembly.

DETAILED DESCRIPTION OF THE INVENTION First Embodiment

As shown in FIG. 1, a table of the present invention comprises atabletop 10, a first supporting component 20, a second supportingcomponent 21, a first lifting driver 30, a second lifting driver 31, afirst inner fixed tube, a second inner fixed tube and a synchronizingmechanism which enables the first lifting driver and the second liftingdriver to lift synchronously, and the various portions and theirrelationships are illustrated in detail below.

As shown in FIG. 1 and FIG. 2, in one or more embodiments, the firstsupporting component 20 and the second supporting component 21 areseparately positioned below the tabletop 10, the first lifting driver 30is mounted on the first supporting component 20, the second liftingdriver 31 is mounted on the second supporting component 21, the firstlifting driver 30 and the second lifting driver 31 are air springspreferably, the structures of the first lifting driver 30 and the secondlifting driver 31 and the assembly structures of the first supportingcomponent 20 and the second supporting component 21 are the same as thestructure disclosed in a patent with the publication number beingCN106308039A preferably, and descriptions thereof are omitted herein.The first lifting driver 30 and the second lifting driver 31 can furtherbe components such as air cylinders or hydraulic cylinders.

As shown in FIG. 2 to FIG. 6, the synchronizing mechanism comprises afirst support 40, a second support 41, a first flexible tractioncomponent 42 and a second flexible traction component 43, and thestructure of the synchronizing mechanism is illustrated in detail below.

As shown in FIG. 2 to FIG. 6, one end of the first support 40 isconnected with a lifting end of the first lifting driver 30, the firstsupport 40 lifts along with lifting of the first lifting driver 30,according to a preferable connection mode for the first support 40 andthe first lifting driver 30, a first hole 401 is formed in one end ofthe first support 40, a first mounting hole is formed in the lifting endof the first lifting driver 30, and a first shaft 301 penetrates throughthe first hole 401 and the first mounting hole, so that the firstlifting driver 30 and the first support 40 are connected integrally; andpreferably, one portion of the first support 40 is positioned in thefirst inner fixed tube, and one portion of the first lifting driver 30is also positioned in the first inner fixed tube. One end of the firstinner fixed tube is fixedly connected with the first supportingcomponent 20, and therefore, when the lifting end of the first liftingdriver 30 lifts to drive the first support 40 to lift, the first innerfixed tube cannot move.

As shown in FIG. 2 to FIG. 6, the first support 41 comprises: a firstsupport body 411, a first rotating component 412, a second rotatingcomponent 413 and a third rotating component 414, the first rotatingcomponent 412 is rotatably mounted at one end of the first support body411, and the second rotating component 413 is rotatably mounted at oneend of the first support body 411; and the third rotating component 414is rotatably mounted at the other end of the first support body 411.

As shown in FIG. 2 to FIG. 6, the cross section of the first supportbody 411 is U-shaped, preferably, the first support body 411 is a steelchannel, the first rotating component 412 and the second rotatingcomponent 413 are both positioned in a groove in one end of the firstsupport body 411, the first shaft 301 penetrates through the firstrotating component 412 and the second rotating component 413 so that thefirst rotating component 412 and the second rotating component 413 aresupported by the first shaft 301, and the first rotating component 412and the second rotating component 413 can rotate. But the third rotatingcomponent 414 is positioned in a groove in the other end of the firstsupport body 411, and is supported through a first mandrel (not shown),and thus, the third rotating component 414 can rotate. The firstrotating component 412, the second rotating component 413 and the thirdrotating component 414 are one of bearings or rollers or chain wheels.

As shown in FIG. 2 to FIG. 6, one end of the second support 41 isconnected with the lifting end of the second lifting driver 31, thesecond support 41 lifts along with lifting of the second lifting driver31, according to a preferable connection mode for the second support 41and the second lifting driver 31, a second hole 410 is formed in one endof the second support 41, a second mounting hole is formed in thelifting end of the second lifting driver 31, and a second shaft 311penetrates through the second hole 410 and the second mounting hole, sothat the second lifting driver 31 and the second support 41 areconnected integrally. Preferably, one portion of the second support 41is positioned in the second inner fixed tube, and one portion of thesecond lifting driver 31 is also positioned in the second inner fixedtube. One end of the second inner fixed tube is fixedly connected withthe second supporting component 21, and therefore, when the lifting endof the second lifting driver 31 lifts to drive the second support 41 tolift, the second inner fixed tube cannot move.

As shown in FIG. 2 to FIG. 6, the second support 42 comprises a secondsupport body 421, a fourth rotating component 422, a fifth rotatingcomponent 423 and a sixth rotating component 424, the fourth rotatingcomponent 422 is rotatably mounted at one end of the second support body421, and the fifth rotating component 423 is rotatably mounted at oneend of the second support body 421; and the sixth rotating component 424is rotatably mounted at the other end of the second support body 421.

As shown in FIG. 2 to FIG. 6, the cross section of the second supportbody 421 is U-shaped, preferably, the second support body 421 is a steelchannel, the fourth rotating component 422 and the fifth rotatingcomponent 423 are positioned in a groove in one end of the secondsupport body 421, the second shaft 311 penetrates through the fourthrotating component 422 and the fifth rotating component 423 so that thefourth rotating component 422 and the fifth rotating component 423 aresupported by the second shaft 311, and the fourth rotating component 422and the fifth rotating component 423 can rotate. But the sixth rotatingcomponent 424 is positioned in a groove in the other end of the secondsupport body 421, and is supported through a second mandrel, and thus,the sixth rotating component 424 can rotate. The fourth rotatingcomponent 422, the fifth rotating component 423 and the sixth rotatingcomponent 424 are one of bearings or rollers or chain wheels.

As shown in FIG. 2 to FIG. 6, one end of the first flexible tractioncomponent 42 is fixedly connected with the second inner fixed tube, andafter the first flexible traction component 42 is flexibly matched withone end of the second support 41, one end of the first support 40 andthe other end of the first support 41, the other end of the firstflexible traction component 42 is fixedly connected with the first innerfixed tube. Preferably, the first flexible traction component 42 isflexibly matched with the fifth rotating component 423, the firstrotating component 412 and the third rotating component 414, and themode of flexible matching is similar to a mode of matching a belt with abelt pulley, namely the first flexible traction component 42 istensioned by the fifth rotating component 423, the first rotatingcomponent 412 and the third rotating component 414.

As shown in FIG. 2 to FIG. 6, one end of the second flexible tractioncomponent 43 is fixedly connected with the first inner fixed tube, andafter the second flexible traction component 42 is flexibly matched withone end of the first support 40, one end of the second support 41 andthe other end of the second support 41, the other end of the secondflexible traction component 43 is fixedly connected with the secondinner fixed tube. The second flexible traction component is flexiblymatched with the second rotating component 413, the fourth rotatingcomponent 422 and the sixth rotating component 424, and the mode offlexible matching is similar to the mode of matching a belt with a beltpulley, namely the second flexible traction component 43 is tensioned bythe sixth rotating component 424, the second rotating component 413 andthe fourth rotating component 422.

As shown in FIG. 2 to FIG. 6, the first inner fixed tube comprises afirst inner tube 50 and a first connector 51, one end of the first innertube 50 is fixed to the first supporting component 20, at least oneportion of the first connector 51 is positioned in the first inner tube50 and is fixed to the first inner tube 50, the first connector 51consists of a first U-shaped connecting portion 510 and first bentconnecting portions 511 formed by bending the two ends of the firstU-shaped connecting portion 510, a first through hole is formed in thewall of the first inner tube 50, the first U-shaped connecting portion510 penetrates through the first through hole and is positioned in thefirst inner tube 50, and the first bent connecting portions 511 arepositioned on the outside of the first inner tube 50 and is fixedlyconnected with the first inner tube 50.

As shown in FIG. 2 to FIG. 6, the second inner fixed tube comprises asecond inner tube 60 and a second connector 61, at least one portion ofthe second connector 61 is positioned in the second inner tube 60 and isfixed to the second inner tube 60, the second connector 61 consists of asecond U-shaped connecting portion 610 and second bent connectingportions 611 formed by bending the two ends of the second U-shapedconnecting portion 610, a second through hole is formed in the wall ofthe second inner tube 60, the second U-shaped connecting portion 610 ispositioned in the second inner tube 60 via the second through hole, andthe second bent connecting portions 611 are positioned on the outside ofthe second inner tube 60 and is fixedly connected with the second innertube 60.

As shown in FIG. 2 to FIG. 8, one end of the first flexible tractioncomponent 42 is fixedly connected with the second connector 61, theother end of the first flexible traction component 42 is fixedlyconnected with the first connector 51, one end of the second flexibletraction component 43 is fixedly connected with the first connector 51,and the other end of the second flexible traction component 43 isfixedly connected with the second connector 61. Preferably, one end ofthe first flexible traction component 42 is fixedly connected with thesecond U-shaped connecting portion 610 of the second connector 61through a screw or a pin, the other end of the first flexible tractioncomponent 42 is fixedly connected with the first U-shaped connectingportion 510 of the first connector 51 through a screw or a pin, one endof the second flexible traction component 43 is fixedly connected withthe first U-shaped connecting portion 510 of the first connector 51through a screw or a pin, and the other end of the second flexibletraction component 43 is fixedly connected with the second U-shapedconnecting portion 610 of the second connector 61 through a screw or apin.

As shown in FIG. 2 to FIG. 6, the first flexible traction component 42and the second flexible traction component 43 are one of rope-shapedcomponents or band-shaped components or steel wires or chainsseparately. When the first flexible traction component 42 and the secondflexible traction component 43 are the rope-shaped components or theband-shaped components or the steel wires, the first rotating component412, the second rotating component 413, the third rotating component414, the fourth rotating component 422, the fifth rotating component 423and the sixth rotating component 424 are bearings or rollers, andgrooves are formed in the outer peripheral surfaces of the bearings orthe rollers and are matched with the first flexible traction component42 and the second flexible traction component 43.

As shown in FIG. 2 to FIG. 6, when the first flexible traction component42 and the second flexible traction component 43 are chains, the firstrotating component 412, the second rotating component 413, the thirdrotating component 414, the fourth rotating component 422, the fifthrotating component 423 and the sixth rotating component 424 are chainwheels.

As shown in FIG. 2 to FIG. 6, the table of the present invention furthercomprises a cross beam 70, a first movable outer tube 71 and a secondmovable outer tube 72, one end of the cross beam 70 is fixed to thelifting end of the first lifting driver 30, and the other end of thecross beam 70 is fixed to the lifting end of the second lifting driver31; and the cross beam 70 is connected with the first shaft 301, thus,when the lifting end of the first lifting driver 30 and the lifting endof the second lifting driver 31 lift, the cross beam 70 lifts along withthe first lifting driver 30 and the second lifting driver 31.

As shown in FIG. 2 to FIG. 6, one end of the first movable outer tube 71is fixed to one end of the cross beam 70, and the first movable outertube 71 lifts along with lifting of the cross beam 70. The first movableouter tube 71 is sleeved over the first inner fixed tube, namely thefirst movable outer tube 71 is sleeved over the first inner tube 50, afirst friction assembly 80 is mounted on the first inner tube 50, andpreferably, the first friction assembly 80 is fixed to the outerperipheral surface of the other end of the first inner tube 50, ismatched with the inner wall surface of the first movable outer tube 71,and guides lifting of the first movable outer tube 71. A second frictionassembly is mounted on the inner peripheral surface of the other end ofthe first movable outer tube 71, is matched with the outer peripheralsurface of the first inner tube 50, and guides lifting of the firstmovable outer tube 71, the first friction assembly 80 and the secondfriction assembly not only can be rolling friction assemblies, but alsocan be sliding friction assemblies, and the structure of the firstfriction assembly 80 and the structure of the second friction assemblyare the same as the structure disclosed in the patent with thepublication number being CN106308039A, and descriptions thereof areomitted herein.

As shown in FIG. 2 to FIG. 6, one end of the second movable outer tube72 is fixed to the other end of the cross beam 70, and the secondmovable outer tube 72 lifts along with lifting of the cross beam 70. Thesecond movable outer tube 72 is sleeved over the second inner fixedtube. The second movable outer tube 72 is sleeved over the second innertube 60, a third friction assembly is mounted on the second inner tube60, and preferably, the third friction assembly is fixed to the outerperipheral surface of the other end of the second inner tube 60, ismatched with the inner wall surface of the second movable outer tube 72,and guides lifting of the second movable outer tube 72. A fourthfriction assembly is mounted on the inner peripheral surface of theother end of the second movable outer tube 72, is matched with the outerperipheral surface of the second inner tube 60, and guides lifting ofthe second movable outer tube 72, the third friction assembly and thefourth friction assembly not only can be rolling friction assemblies,but also can be sliding friction assemblies, and the structure of thethird friction assembly and the structure of the fourth frictionassembly are the same as the structure disclosed in the patent with thepublication number being CN106308039A, and descriptions thereof areomitted herein.

The tabletop 10 is fixed to the synchronizing mechanism in thesynchronous lifting mechanism. The tabletop 10 is fixed to the crossbeam 70 in the synchronizing mechanism.

The working process of the present invention is as follows: when thetabletop of the table requires to ascend, the first lifting driver 30and the second lifting driver 31 are started through a switch, the firstlifting driver 30 transmits power to the first shaft 301, the secondlifting driver 31 transmits power to the second shaft 311, the firstshaft 301 and the second shaft drive the cross beam 70, the tabletop 10,the first support body 411 and the second support body 421 to ascend,the first rotating component 412 and the second rotating component 413are connected with the first support body 411 through the first shaft301, the third rotating component 414 is connected with the firstsupport body 411 through a first mandrel, the fourth rotating component422 and the fifth rotating component 423 are connected with the secondsupport body 421 through the second shaft 311, the sixth rotatingcomponent 424 is connected with the first support body 421 through asecond mandrel, therefore, when the first support body 411 and thesecond support body 421 ascend, the first rotating component 412, thesecond rotating component 413 and the third rotating component 414ascend along with the first support body 411, the third rotatingcomponent 422, the fifth rotating component 423 and the fourth rotatingcomponent 424 ascend along with the first support body 421, but thefirst connector 51 and the second connector 61 cannot move, at themoment, the distance between the first connector 51 and the thirdrotating component 414 is shortened, the distance between the secondconnector 61 and the sixth rotating component 424 is shortened, thefirst rotating component 412 and the fifth rotating component 423 applyan upward tensile force to the first flexible traction component 42, thefirst flexible traction component 42 is forced to move in a directionfrom the first rotating component 412 to the direction in which thefifth rotating component 423 is located, the second rotating component413 and the fourth rotating component 422 apply an upward tensile forceto the second flexible traction component 43, the second flexibletraction component 43 is forced to move in a direction from the fourthrotating component 422 to the direction in which the second rotatingcomponent 413 is located, and thus, when the first lifting driver 30 andthe second lifting driver 31 ascend, the first flexible tractioncomponent 42 and the second flexible traction component 43 restrain thefirst lifting driver 30 and the second lifting driver 31 so that thefirst lifting driver 30 and the second lifting driver 31 ascendsynchronously. On the contrary, when the first lifting driver 30 and thesecond lifting driver 31 descend, similarly, the first flexible tractioncomponent 42 and the second flexible traction component 43 restrain thefirst lifting driver 30 and the second lifting driver 31 so that thefirst lifting driver 30 and the second lifting driver 31 descendsynchronously.

Second Embodiment

The present invention is not limited to the embodiment, for example,arc-shaped grooves are separately formed in two ends of the firstsupport 40 and two ends of the second support 41, and the first flexibletraction component 42 and the second flexible traction component 43 areseparately matched with the grooves of the first support and the secondsupport. In the mode, the first rotating component 412, the secondrotating component 413 and the third rotating component 414 do not needto be mounted on the first support 40, and the fourth rotating component422, the fifth rotating component 423 and the sixth rotating component424 do not need to be mounted on the second support 41 either. By themode, when the first flexible traction component 42 and the secondflexible traction component 43 are band-shaped components or rope-shapedcomponents, the first flexible traction component 42 is in surfacecontact with the first support 40 and the second support 41, and whenthe first flexible traction component 42 moves, surface-to-surfacefrictional forces are formed between the first flexible tractioncomponent 42 and the first support 40 as well as the second support 41and between the second flexible traction component 43 and the firstsupport 40 as well as the second support 41. When the first flexibletraction component 42 and the second flexible traction component 43 aresteel wires, the first flexible traction component 42 is in wire-surfacecontact with the first support 40 and the second support 41, and whenthe first flexible traction component 42 moves, wire-to-surfacefrictional forces are formed between the first flexible tractioncomponent 42 and the first support 40 as well as the second support 41and between the second flexible traction component 43 and the firstsupport 40 as well as the second support 41. In the mode, regardless ofwhether the first flexible traction component 42 and the second flexibletraction component 43 are band-shaped components or rope-shapedcomponents or steel wires, the frictional forces between the firstflexible traction component 42 and the first support 40 as well as thesecond support 41 and between the second flexible traction component 43and the first support 40 as well as the second support 41 duringmovement of the first flexible traction component 42 and the secondflexible traction component 43 are greater than the frictional forces inthe first embodiment, and therefore, the structure in the firstembodiment is adopted preferably in actual use.

The embodiments illustrate that the synchronous lifting device of thepresent invention is suitable for a table, however, the synchronouslifting device of the present invention is not limited to be used on thetable, and it can further be used on a chair or used in a situationrequiring lifting.

We claim:
 1. A synchronous lifting mechanism, comprising a first liftingdriver, a second lifting driver, a first inner fixed tube and a secondinner fixed tube, characterized in that the synchronous liftingmechanism further comprises a synchronizing mechanism which enables thefirst lifting driver and the second lifting driver to liftsynchronously, and the synchronizing mechanism comprises: a firstsupport connected with a lifting end of the first lifting driver,wherein the first support lifts along with lifting of the first liftingdriver; a second support connected with a lifting end of the secondlifting driver, wherein the second support lifts along with lifting ofthe second lifting driver; a first flexible traction component, whereinone end of the first flexible traction component is fixedly connectedwith the second inner fixed tube, and after the first flexible tractioncomponent is flexibly matched with one end of the second support, oneend of the first support and the other end of the first support, theother end of the first flexible traction component is fixedly connectedwith the first inner fixed tube; and a second flexible tractioncomponent, wherein one end of the second flexible traction component isfixedly connected with the first inner fixed tube, and after the secondflexible traction component is flexibly matched with one end of thefirst support, one end of the second support and the other end of thesecond support, the other end of the second flexible traction componentis fixedly connected with the second inner fixed tube.
 2. Thesynchronous lifting mechanism according to claim 1, characterized inthat the first inner fixed tube comprises a first inner tube and a firstconnector, the first connector is positioned in the first inner tube andis fixed to the first inner tube, the other end of the first flexibletraction component is fixedly connected with the first connector, andone end of the second flexible traction component is fixedly connectedwith the first connector; and the second inner fixed tube comprises asecond inner tube and a second connector, the second connector ispositioned in the second inner tube and is fixed to the second innertube, one end of the first flexible traction component is fixedlyconnected with the second connector, and the other end of the secondflexible traction component is fixedly connected with the secondconnector.
 3. The synchronous lifting mechanism according to claim 1,characterized in that one portion of the first support is positioned inthe first inner fixed tube, and one portion of the second support ispositioned in the second inner fixed tube.
 4. The synchronous liftingmechanism according to claim 1, characterized in that the first supportcomprises: a first support body; a first rotating component rotatablymounted at one end of the first support body; a second rotatingcomponent rotatably mounted at one end of the first support body; and athird rotating component rotatably mounted at the other end of the firstsupport body; the second support comprises: a second support body; afourth rotating component rotatably mounted at one end of the secondsupport body; a fifth rotating component rotatably mounted at one end ofthe second support body; and a sixth rotating component rotatablymounted at the other end of the second support body; wherein the firstflexible traction component is flexibly matched with the fifth rotatingcomponent, the first rotating component and the third rotatingcomponent; and the second flexible traction component is matched withthe second rotating component, the fourth rotating component and thesixth rotating component.
 5. The synchronous lifting mechanism accordingto claim 4, characterized in that the first rotating component, thesecond rotating component, the third rotating component, the fourthrotating component, the fifth rotating component and the sixth rotatingcomponent are one of bearings or rollers or chain wheels.
 6. Thesynchronous lifting mechanism according to claim 5, characterized inthat when the first rotating component, the second rotating component,the third rotating component, the fourth rotating component, the fifthrotating component and the sixth rotating component are bearings orrollers, a groove is formed in the outer peripheral surface of eachbearing or roller.
 7. The synchronous lifting mechanism according toclaim 1, characterized in that the first flexible traction component andthe second flexible traction component are one of rope-shaped componentsor band-shaped components or steel wires or chains separately.
 8. Thesynchronous lifting mechanism according to claim 1, characterized inthat arc-shaped grooves are separately formed in two ends of the firstsupport and two ends of the second support, and the first flexibletraction component and the second flexible traction component areseparately matched with the grooves of the first support and the secondsupport.
 9. The synchronous lifting mechanism according to claim 1,characterized by further comprises: a cross beam, wherein one end of thecross beam is fixed to the lifting end of the first lifting driver, andthe other end of the cross beam is fixed to the lifting end of thesecond lifting driver; a first movable outer tube of which one end isfixed to one end of the cross beam, wherein the first movable outer tubeis sleeved over the first inner fixed tube; and a second movable outertube of which one end is fixed to the other end of the cross beam,wherein the second movable outer tube is sleeved over the second innerfixed tube.
 10. A table, comprising a tabletop, characterized by furthercomprises the synchronous lifting mechanism according to claim 1,wherein the tabletop is fixed to the synchronizing mechanism in thesynchronous lifting mechanism.